Set up Continuous Integration via GH Actions (#678)

* Set up Continuous Integration via GH Actions
* Disable closing of opened pipes on GitHub Actions
* Delete TravisCI configuration

Author: ashmaroli

.github/workflows/ci.yml

@@ -0,0 +1,53 @@
+name: Continuous Integration
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  ruby:
+    name: "Test Backend (Jekyll ${{ matrix.jekyll_version }}, Ruby ${{ matrix.ruby_version }})"
+    runs-on: "ubuntu-latest"
+    env:
+      JEKYLL_VERSION: ${{ matrix.jekyll_version }}
+      JEKYLL_LOG_LEVEL: warn
+      RACK_ENV: test
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby_version: ["2.7"]
+        jekyll_version:
+          - "~> 3.9"
+          - "~> 4.0"
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v2
+      - name: "Set up Ruby ${{ matrix.ruby_version }}"
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby_version }}
+          bundler-cache: true
+      - name: Unit Tests
+        run: bundle exec rspec --format documentation --force-color --backtrace
+
+  node:
+    name: "Test Frontend (Node ${{ matrix.node_version }})"
+    runs-on: "ubuntu-latest"
+    strategy:
+      fail-fast: false
+      matrix:
+        node_version: ["12"]
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v2
+      - name: "Set up Node ${{ matrix.node_version }}"
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.node_version }}
+          cache: "yarn"
+      - name: Install Dependencies
+        run: yarn install
+      - name: Run tests and build frontend
+        run: bash script/build

.travis.yml

@@ -16,7 +16,9 @@
     sleep 3
   end
 
-  after { Open3.capture2e(*stop_command) }
+  unless ENV["GITHUB_ACTION"]
+    after { Open3.capture2e(*stop_command) }
+  end
 
   context "Jekyll site" do
     let(:path) { "/" }